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start add kv to kvs transformations

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InsanusMokrassar 2023-02-02 10:15:37 +06:00
parent 442db122cf
commit 4f68459582
2 changed files with 143 additions and 0 deletions
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69
repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/transforms/kv/ReadKeyValueFromKeyValuesRepo.kt Normal file
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package dev.inmo.micro_utils.repos.transforms.kv
import dev.inmo.micro_utils.pagination.FirstPagePagination
import dev.inmo.micro_utils.pagination.Pagination
import dev.inmo.micro_utils.pagination.PaginationResult
import dev.inmo.micro_utils.pagination.changeResults
import dev.inmo.micro_utils.pagination.changeResultsUnchecked
import dev.inmo.micro_utils.pagination.utils.doForAllWithNextPaging
import dev.inmo.micro_utils.pagination.utils.optionallyReverse
import dev.inmo.micro_utils.pagination.utils.paginate
import dev.inmo.micro_utils.repos.ReadKeyValueRepo
import dev.inmo.micro_utils.repos.ReadKeyValuesRepo
import dev.inmo.micro_utils.repos.transforms.kvs.ReadKeyValuesFromKeyValueRepo
open class ReadKeyValueFromKeyValuesRepo<Key, Value>(
private val original: ReadKeyValuesRepo<Key, Value>
) : ReadKeyValueRepo<Key, List<Value>> {
override suspend fun get(k: Key): List<Value>? = original.getAll(k)
override suspend fun values(
pagination: Pagination,
reversed: Boolean
): PaginationResult<List<Value>> {
val keys = keys(pagination, reversed)
return keys.changeResults(
keys.results.mapNotNull {
get(it)
}
)
}
override suspend fun keys(pagination: Pagination, reversed: Boolean): PaginationResult<Key> {
return original.keys(pagination, reversed)
}
override suspend fun count(): Long {
return original.count()
}
override suspend fun contains(key: Key): Boolean {
return original.contains(key)
}
override suspend fun keys(v: List<Value>, pagination: Pagination, reversed: Boolean): PaginationResult<Key> {
val keys = mutableSetOf<Key>()
doForAllWithNextPaging(FirstPagePagination(count().toInt())) {
original.keys(it).also {
it.results.forEach {
val values = get(it) ?: return@forEach
if (values.containsAll(v) && v.containsAll(values)) {
keys.add(it)
}
}
}
}
val paginated = keys.paginate(
pagination.optionallyReverse(keys.count(), reversed)
)
return if (reversed) {
paginated.changeResultsUnchecked(paginated.results.reversed())
} else {
paginated
}
}
}
fun <K, V> ReadKeyValuesRepo<K, V>.asReadKeyValueRepo() = ReadKeyValueFromKeyValuesRepo(this)

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repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/transforms/kvs/ReadKeyValuesFromKeyValueRepo.kt Normal file
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package dev.inmo.micro_utils.repos.transforms.kvs
import dev.inmo.micro_utils.pagination.FirstPagePagination
import dev.inmo.micro_utils.pagination.Pagination
import dev.inmo.micro_utils.pagination.PaginationResult
import dev.inmo.micro_utils.pagination.changeResultsUnchecked
import dev.inmo.micro_utils.pagination.emptyPaginationResult
import dev.inmo.micro_utils.pagination.utils.doForAllWithNextPaging
import dev.inmo.micro_utils.pagination.utils.optionallyReverse
import dev.inmo.micro_utils.pagination.utils.paginate
import dev.inmo.micro_utils.repos.ReadKeyValueRepo
import dev.inmo.micro_utils.repos.ReadKeyValuesRepo
open class ReadKeyValuesFromKeyValueRepo<Key, Value, ValuesIterable : Iterable<Value>>(
private val original: ReadKeyValueRepo<Key, ValuesIterable>
) : ReadKeyValuesRepo<Key, Value> {
override suspend fun get(
k: Key,
pagination: Pagination,
reversed: Boolean
): PaginationResult<Value> {
val iterable = original.get(k) ?: return emptyPaginationResult(pagination)
val paginated = iterable.paginate(
pagination.optionallyReverse(iterable.count(), reversed)
)
return if (reversed) {
paginated.changeResultsUnchecked(paginated.results.reversed())
} else {
paginated
}
}
override suspend fun keys(
pagination: Pagination,
reversed: Boolean
): PaginationResult<Key> = original.keys(pagination, reversed)
override suspend fun count(): Long = original.count()
override suspend fun count(k: Key): Long = original.get(k) ?.count() ?.toLong() ?: 0L
override suspend fun contains(k: Key, v: Value): Boolean = original.get(k) ?.contains(v) == true
override suspend fun contains(k: Key): Boolean = original.contains(k)
override suspend fun keys(
v: Value,
pagination: Pagination,
reversed: Boolean
): PaginationResult<Key> {
val keys = mutableSetOf<Key>()
doForAllWithNextPaging(FirstPagePagination(count().toInt())) {
original.keys(it).also {
it.results.forEach {
if (contains(it, v)) {
keys.add(it)
}
}
}
}
val paginated = keys.paginate(
pagination.optionallyReverse(keys.count(), reversed)
)
return if (reversed) {
paginated.changeResultsUnchecked(paginated.results.reversed())
} else {
paginated
}
}
}
fun <K, V, VI : Iterable<V>> ReadKeyValueRepo<K, VI>.asReadKeyValuesRepo() = ReadKeyValuesFromKeyValueRepo(this)